What is opening scene of the film To sir with love?

The opening scene of the film "To Sir, with Love" shows a young man named Mark Thackeray (played by Sidney Poitier) walking through the streets of London, looking for a job. He is dressed in a suit and tie, and appears to be well-educated and well-spoken. As he passes by a group of rowdy teenagers, they mock and taunt him, but he remains composed and continues on his way. The scene sets the tone for the film, highlighting the challenges and prejudices that Thackeray will face as he takes on a teaching job at a tough inner-city school.